10 research outputs found

    Regression Data Analysis Approach On COVID-19 Prediction

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    The Proposed method is to develop the regression models for the observed frequency distribution process and generate expected frequency distribution. This study analyzed the daily COVID 19 cases site, Regression models they are used to estimate daily confirmed, Death and New cases data of per day. The error estimates RMSE, MAE of forecasts from the above models is compared to identify the most suitable approaches for forecasting trend analysis

    Performance of BFRP and GFRP Hollow Circular Steel columns subjected to axial compression loads

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    Recent research has been focused on rehabilitation and strengthening of deteriorated steel structures and bridges using Fiber Reinforced Polymer (FRP) materials. This paper deals with the behavior of FRP confinement of hollow steel sections subjected to axial compression loads. The load carrying capacity and buckling failure patterns of hallow steel sections strengthened by different FRP were studied experimentally. Numbers of circular hallow steel sections of same diameter with different L/D ratio test specimens were fabricated. Three different L/D ratio test specimens were used as control specimens. The different number of layers in FRP such as basalt (BFRP) and glass (GFRP) fabrics in different orientations has been fabricated. The effects of strengthened elements were observed under axial compression load. The load vz slenderness ratio, stress strain relationship, the ultimate load vz orientation and number of ply wrapping by different FRP were deeply analyzed and are plotted, tabulated and discussed. Besides local and overall buckling modes, failure patterns and rupturing of fiber of strengthened and non strengthened specimens were also observed. It is concluded that BFRP fabric wrapped by double layers in the circumferential direction elements withstand more axial compressive load than other strengthened and non strengthened elements

    Bioinformatics Based: in Silico Docking Analysis of Polyherbal Formulation for The Management of Parkinson’s Disease (Nadukku Vatham)

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    Background: The discipline of Siddha medicine, particularly herbal formulations, can benefit greatly from the use of molecular docking because it enables the molecular interactions of the formulation’s lead molecules with receptors to be understood, as well as the inference of the formulation's basic biochemical targets.  Aim: The goal of this study is to carry out an In-silico computational analysis of the phytochemicals found in Kuruver Kudineer (KK), a traditional Siddha remedy that is used for managing behavioral deficit in Parkinsons disease.  Methodology: The ligand structures were developed and optimized using Auto Dock Tools (Morris, Goodsell et al., 1998). Using Auto dock Vina, the compounds were all docked. The function of the target protein Monoamine Oxidase -A (PDB 2Z5X), which is involved in the breakdown of the neurotransmitters by MAO-A, will be inhibited by the creation of a hydrogen bond between phytocomponents and the target's core amino acids (Tyr 69, Ile 335, Tyr 407, and Tyr 444). In order to control the dopamine level, phytocomponents that inhibit the target enzyme MAO-A may be used as potential targets. Results: The compounds present in Kuruver Kudineer (KK) like Gingerenone-A, Betulinic acid, Zingiberene, Rutin, Geniposide and β-sitosterol showed maximum interactions with MAO –A when compared to that of Clorgyline. According to the outcomes of the computational investigation, the bio-active substances present in the Siddha formulation Kuruver Kudineer (KK) have significant affinity to the target MAO-A (PDB 2Z5X). Conclusions: From the results of the present study, it was concluded that the MAO – A reveal significant effect to managing the behavioral deficit and thereby considered an excellent drug choice for the clinical management of Parkinson’s disease (Nadukku vatham

    Regulation of Motor Function and Behavior by Atypical Chemokine Receptor 1

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    The final publication is available at Springer via http://dx.doi.org/10.1007/s10519-014-9665-7Atypical Chemokine Receptor 1 (ACKR1), previously known as the Duffy Antigen Receptor for Chemokines, stands out among chemokine receptors for its high selective expression on Purkinje cells of the cerebellum, consistent with the ability of ACKR1 ligands to activate Purkinje cells in vitro. Nevertheless, evidence for ACKR1 regulation of brain function in vivo has been lacking. Here we demonstrate that Ackr1−/− mice have markedly impaired balance and ataxia when placed on a rotating rod and increased tremor when injected with harmaline, a drug that induces whole-body tremor by activating Purkinje cells. Ackr1−/− mice also exhibited impaired exploratory behavior, increased anxiety-like behavior and frequent episodes of marked hypoactivity under low-stress conditions. The behavioral phenotype of Ackr1−/− mice was the opposite of the phenotype occurring in mice with cerebellar degeneration and the defects persisted when Ackr1 was deficient only on non-hematopoietic cells. We conclude that normal motor function and behavior depend in part on negative regulation of Purkinje cell activity by Ackr1

    Liver damage and systemic inflammatory responses are exacerbated by the genetic deletion of CD39 in total hepatic ischemia

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    Liver ischemia reperfusion injury is associated with both local damage to the hepatic vasculature and systemic inflammatory responses. CD39 is the dominant vascular endothelial cell ectonucleotidase and rapidly hydrolyses both adenosine triphosphate (ATP) and adenosine diphosphate to adenosine monophosphate. These biochemical properties, in tandem with 5′-nucleotidases, generate adenosine and potentially illicit inflammatory vascular responses and thrombosis. We have evaluated the role of CD39 in total hepatic ischemia reperfusion injury (IRI). Wildtype mice, Cd39-hemizygous mice (+/−) and matched Cd39-null mice (−/−); (n = 25 per group) underwent 45 min of total warm ischemia with full inflow occlusion necessitating partial hepatectomy. Soluble nucleoside triphosphate diphosphohydrolase (NTPDases) or adenosine/amrinone were administered to wildtype (n = 6) and Cd39-null mice (n = 6) in order to study protective effects in vivo. Parameters of liver injury, systemic inflammation, hepatic ATP determinations by P31-NMR and parameters of lung injury were obtained. All wildtype mice survived up to 7 days with minimal biochemical disturbances and minor evidence for injury. In contrast, 64% of Cd39+/− and 84% of Cd39-null mice required euthanasia or died within 4 h post-reperfusion with liver damage and systemic inflammation associated with hypercytokinemia. Hepatic ATP depletion was pronounced in Cd39-null mice posthepatic IRI. Soluble NTPDase or adenosine administration protected Cd39-deficient mice from acute reperfusion injury. We conclude that CD39 is protective in hepatic IRI preventing local injury and systemic inflammation in an adenosine dependent manner. Our data indicate that vascular CD39 expression has an essential protective role in hepatic IRI
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